Callippos of Cyzicus
Kallippos of Kyzikos ( Greek Κάλλιππος Kállippos ; born around 370 BC in Kyzikos ; died around 300 BC) was a Greek astronomer and mathematician.
Kallippos was born in Kyzikos on the Marmara Sea and was a student of Eudoxos at the Platonic Academy . He also worked alongside Aristotle in his Lyceum .
As a student of Eudoxus, who had already designed 27 planetary spheres, Kallippos continued his work on the movements of the planets. He felt compelled to introduce seven more; two for the sun, two for the moon and one each for Mercury , Venus and Mars . Kallippos also calculated the Kallippian cycle ( Meton cycle ) named after him .
The lunar crater Calippus and the Rima Calippus , a groove structure of the earth's moon , are named after the ancient astronomer .
literature
Overview representations
- John S. Kieffer: Callippus . In: Charles Coulston Gillispie (Ed.): Dictionary of Scientific Biography . tape 3 : Pierre Cabanis - Heinrich von Dechen . Charles Scribner's Sons, New York 1971, p. 21-22 .
- Alain Segonds: Callippe de Cyzique. In: Richard Goulet (ed.): Dictionnaire des philosophes antiques. Volume 2, CNRS Éditions, Paris 1994, ISBN 2-271-05195-9 , pp. 179-182
Investigations
- Henry Mendell: Reflections on Eudoxus, Callippus and their Curves: Hippopedes and Callippopedes. In: Centaurus 40, 1998, pp. 177-275 (on planetary theory).
- James Evans, J. Lennart Berggren: Geminos's Introduction to the Phenomena. A Translation and Study of a Hellenistic Survey of Astronomy. Princeton University Press, Princeton 2006, ISBN 0-691-12339-X .
Web links
- John J. O'Connor, Edmund F. Robertson : Kallippos von Kyzikos. In: MacTutor History of Mathematics archive .
Individual evidence
- ↑ Aristotle: Metaphysics 12, 8-
| personal data | |
|---|---|
| SURNAME | Callippos of Cyzicus |
| ALTERNATIVE NAMES | Calippos |
| BRIEF DESCRIPTION | Greek mathematician and astronomer |
| DATE OF BIRTH | around 370 BC Chr. |
| PLACE OF BIRTH | Kyzikos |
| DATE OF DEATH | around 300 BC Chr. |